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Mathematics, 24.10.2021 14:00 sara6689

a total of 600 books were labelled A, B,C and D. Given that 1/4 of the book is labelled A and 3/10 of the book is labelled B. There are 15 books labelled C. Calculate the number of books labelled D.

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a total of 600 books were labelled A, B,C and D. Given that 1/4 of the book is labelled A and 3/10 o...
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